In the scope of the Master Thesis “EzNav – A Web browser for elderly users”, an application is under development at Fraunhofer AICOS to improve older adults’ navigation on the internet. With the aim of creating a browser specifically designed for seniors, a study on the seniors’ interests regarding the themes they look for on the internet is being carried out, as well as usability research on their needs and preferences regarding the layout and the icons of the mobile interfaces.